The former No. 1-ranked Nadal moved easily around the court, showing no signs his left knee was bothering him.

“He is worrying about his knees, he’s worried about his health. He’s worried about getting back to a good competitive level,” his spokesman Benito Perez-Barbadillo said.

“He’s not worried in a negative way,” he added. “What he cares about is to be healthy and be ready to be competitive at every level he plays and to be at the same level as he was playing before.”

Nadal came to Chile wanting to get playing time as he tries to catch up to his top rivals Roger Federer, Andy Murray and Novak Djokovic again. If he keeps winning in singles and doubles he will be playing two matches a day this weekend.

Nadal won the last of his eight doubles titles last year with Mark Lopez in Indian Wells. He has won 50 titles in singles.

Nadal is being treated as if he’s a rock star in Chile, where he had never played until this week.

“I feel like just another Chilean,” he said Wednesday. The quote showed up in the headlines of several Chilean newspapers on Thursday.